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The value of sec[sin^(-1)(-sin""(50pi)/9...

The value of `sec[sin^(-1)(-sin""(50pi)/9)+cos^(-1)cos(-(31pi)/9)]` is equal to a)`sec""(10pi)/9` b)`sec""pi/9` c)1 d)`-1`

A

`sec""(10pi)/9`

B

`sec""pi/9`

C

1

D

`-1`

Text Solution

Verified by Experts

The correct Answer is:
D
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